c++读取json文件

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vector<PTLoction> getJson(const string& path)
{
	string info = "", temp_s;
	vector<PTLoction> ptls;
	JSONCPP_STRING errs;
	Json::Value root, geo, geo_item, mail;
	Json::CharReaderBuilder readerBuilder;
	ifstream fin(path);

	while (fin >> temp_s) info += temp_s;
	fin.close();
	if (info.empty()) return {};
	std::unique_ptr<Json::CharReader> const jsonReader(readerBuilder.newCharReader());
	if (!jsonReader->parse(info.c_str(), info.c_str() + info.length(), &root, &errs) || !errs.empty()) return {};
	geo = root["lie"];
	for (int i = 0; i < geo.size(); ++i) {
		FILETOOL::PTLoction temp_ptl = { root["name"].asString(),geo[i][0].asFloat(),geo[i][1].asFloat(),geo[i][2].asFloat() };
		ptls.push_back(temp_ptl);
	}

	return ptls;
}

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